IT 548 Telecommunications & Networking Local Area Networks Hood College Dept. of Computer Science Spring 2013 Layer 2: The Datalink Layer • • 2 Datalink layer provides a reliable communications link between devices. Breaks a data stream into chunks called frames‚ or cells. Three key functions: • error detection • error correction • flow control • • In LANs DL can be broken down into two sub-layers: • media access control (MAC) • logical link control (LLC). • flow and
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A network -Collection of devices that can talk to each other. Applications that use the network -Web browser and FTP -Database application -Instant messenger -Email -Online games Considerations for network applications -Speed -bit byte (8 bits) kilobyte (1024 bytes) megabyte (1024 kilobytes) gigabyte (1024) terabyte (1024 gigabytes) -Delay -Voip has certain delay requirements for voice to be transmitted into data from one point to the next -Availability -How available is your
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Final Exam of Computer Networks (ICE 1230) 2008.5. 27. Answer in English and Total 15 points 1. Why is it said that packet switching employs statistical multiplexing? Contrast statistical multiplexing with the multiplexing that takes place in TDM. (1 point) Answer: In a packet switched network‚ the packets from different sources flowing on a link do not follow any fixed‚ pre-defined pattern. In TDM circuit switching‚ each host gets the same slot in a revolving TDM frame. 2. In BitTorrent
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NETWORK ANALYSIS ADVANTAGES Network analysis can be used to assist the planning and management of complex projects. The following are some of the advantages that result from using the technique: • To calculate the total project duration allows businesses to give accurate delivery dates. Customers may insist on a particular completion date and the critical time shows whether the firm can make this date or not. • Calculating each activity allows the operations manager to order special equipment
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frequencies satellite networks are able to provide broadband services requiring wider bandwidth than the current services at C or Ku-band. As a consequence‚ some of the new services gaining momentum include mobile services‚ private intranets and high data rate internet access carried over integrated satellite-fiber ATM networks. Several performance issues need to be addressed before a transport layer protocol‚ like TCP can satisfactorily work over satellite ATM for large delay-bandwidth networks. In this paper
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SOCIAL NETWORK - TRENDS AND CHALLENGES Social network is a social structure made up of individuals or organizations which are connected by one or more specific types of interdependency‚ such as friendship‚ common interest‚ dislike‚ sexual relationship‚ knowledge or prestige. Logging on to social networking sites had been become inseparable for subscriber of Facebook‚ MySpace‚ etc. People of all age group are becoming very obsessed with social networks in this new technology era. Social network
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UNIX UNIX Network Programming with TCP/IP Short Course Notes Alan Dix © 1996 Network Programming with TCP/IP UNIX Network Programming with TCP/IP UNIX Network Programming with TCP/IP UNIX UNIX Network Programming with TCP/IP Network Programming with TCP/IP http://www.hiraeth.com/alan/tutorials UNIX Network Programming with TCP/IP Course Outline Alan Dix http://www.hcibook.com/alan Session 1 Session 2 Session 3 Internet Basics First Code Standard Applications
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Assignment 2: LAN with Two Subnets Gabriel Jerez Strayer University: Asynchronous CIS408: Network Infrastructure Planning October 28‚ 2012 A LAN consisting of two subnets with a total of 50 users‚ each subnet consisting of 25 users‚ a domain controller‚ and a switch must be connected using the appropriate networking equipment. In my design I decided to use a Cisco 2900 Series Router to connect the two subnets (Cisco ‚ 2012). The router has both routing
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Cook Children ’s Physician Network Organization Design HCS /514 April 15‚ 2013 Abstract Organization design is the vehicle through which business scheme is executed and characterizes the natural environment in which the gifts of an enterprise are released. To that end‚ association conceives is a critical business activity setting up the structure by which an enterprise serves its customers and interfaces with the market. With
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What is social network Social network referred to as a virtual community or profile site‚ a social network is a web site on the Internet that brings people together in a central location to talk‚ gossip‚ share ideas‚ share interests‚ make new friends‚ etc. Popular websites like Facebook‚ MySpace‚ LinkedIn‚ Flickr‚ BlogSpot‚ and Xanga make it easy to build a web of friends and acquaintances‚ and share with them your photos‚ whereabouts‚ contact information‚ and interests. Social networking sites
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